Sander feed mechanism



Feb. 10, 1931. c J KUMMER 1,792,228

SANDER FEED MECHANI SM Filed March 24, 1930 3 Sheets-$hee l INVENTOR K {4: (5. 7 1244.06; ATTORNEY.

Feb. 10, 1931. c. J. KUMMER SANDER FEED MECHANISM Filed March 24, 1930 3 Sheets-Sheet 2 IN VEN TOR.

ATTORNEY.

Feb. 10, 1931. ,c. J. KUMMER 7 1,792,228

SANDER FEED MECHANISM Filed March 24, 1930 5 Sheets-Sheet 3 N WN h N buy/m IN IN VENTOR.

A TTORNE Y.

' The supports 19 are moved along the sup porting guides andadapted to be held in the desired position of adjustment thereon by forming part of each base 18 with rack teeth 26 meshing with a gear 27. The gears 27 are mounted on a manually-operated shaft 28 j'ournalled' in the frame members and provided with a hand-wheel 29. The

top face of the roller is substantially level with the top faces of the pads 13.

WVith this construction the operator can adjust the position of the auxiliary feed roller along the ways of its supporting frame so that it is positioned adjacent the the traction force of this roller20 will aid the apron or other usualffeed mechanism in carrying the board into themachine; It

. will also be observed that this arrangement to prevent the operator getting -his-fingers permits the above-described stacking, since j the power feed herein provided'engages the lowermost board andobviates the necessity of the oprators' holding down on "the forward end of the board to get it started into the machine. 1

To safeguard the operator and keep mas terial from the roller until the previous board falls into place, a transversely extends ing, angled guard bar 30-1s secured at its ends tothe supports 19 and serves as a stop in between the stock and the much;

' In order to handle'the shortest jpiec'esof stock, I have provided a powe- 'operated feed-roller '31, whosesh aft 32 isjournalled in the frame portion 11 of the machine and one 'endof which carries a sprocket engaging the chain 23, thls roller being. ar-

ranged .as closely as possible to the [feed apron to assist thesame in feeding the stock into the machine.

I desire it to be understood that this invention is not to be limited to any particular form or arrangement of parts except insofar assuch limitationsare included in the claims.

-I/Vhat I claim as my invention is:-

1. In a sanding machineythe combinationwith the feed mechanism engage'able with I the forward end portion of the stock to feed it into the machine, of auxiliary, powerdriven feed mechanism engageable with the outer end portion softhestpck for assisting in feeding the stock into the machine, and

means for adjusting the position of. said auxiliary feed mechanism for its action on different' lengths of stock. r

2. In'a sandingjmachinmthe combination toward or away from the main feed mechanism to accommodatedifferentlengths of stock and so as to support the stock at its end portions on said mechanism and roller,

and power-operated means for driving said feed-rollerin any position of adjustment.

3. In a sanding machine, the combination with the mainfeed mechanism ofthe machine, of an auxiliary feed-roller adjustable toward or away from the main feed mechanism to-accommodate differentlengths of stock and so as to support the stock at its end portions on said mechanism and roller, manually-operated means for moving said roller tdits desired adjusted portion, and power-operated means including an endless drive element operatively connected to said roller for driving the'same in any position of adjustment. I r v 4. In a sanding machine, the combination with themain feed mechanism of the machine, of an auxiliary feed-roller adjustable toward or away from the main fee'd mechanism to accommodate different lengths of stocln and so as tosupportthe stock at its end portions on said mechanism and roller, and power-operated means including a' drive chain and a sprocket carried by said roller and engageable with said chain in any position of adjustment of said rollen,

5. In a sanding machine, feed mechanism comprising powerdrive n feed elements engageable with the'forward and rear portions machine and whereby the stock may be stacked at-the, entrance end of the machine andthe lowermost piece ofstock successive 1y fed into'th'emachine, one of said elements being longitudinally adjustable relative to the other'to accommodate stacks of'stock ofdifferent lengths in their end-supported relationship'to said feed elements. i i

In tes i n y' her f,'I afiix my sig e.

{CHARLES JJKUMMEB. q

100 of the stock for feeding the stockintothe' 

